Electronics Forum / Repair / March 2005

I got recently a (very) used HP-5341A frequency counter and it seems to have
a problem with the high impedence input (which counts something even when
shortcircuited or terminated to a dummy load), the other input appeat to be
working good and also the internal 1 GHz source is ...

Hey, guys
Aforementioned TV has resistors R504 and R524 burned beyond
recognition.  Can anyone help me out with the values of these
components?  Looks like C432 is about to blow its top as well.

Hi everyone in the UK.
Is there an Engineer out there who happens to have a TX32DK1 on his bench at
the moment?????
You won't believe this one!!

My ProView flat screen LCD monitor suddenly went black.  It is powered with
a small 12v pack.  I have a green power led, showing it's getting
power---maybe???  However, switching it on and off has no effect---still a
black screen.

Any experience with tape chewing on Hitachi FX623A?  I have read the
newsgroup tried to open the transport assembly.  I have located the
problem to a probably gear mechanism under the forward spool.  In order
to get to the assembly I think you have to dissassemble a bunch of

I am an electronics hobbiest...and like to pursue challenges!
I accidently put a 5+vdc power surge on my two speaker wires inside th
TV set. Since then, I have had no sound on the TV, but everything els
is OK.

I am looking for an RCA DTV307 chassis for a P61310 HDTV.  I will tak
one in working or non working order.  Does anyone have a spare?  I ca
be contacted through my company website at www.computersurgeon.com
--

I am trying to remove the fans from the armature which are press fit on the shaft. I have
tried a 3 jaw bearing puller  but the aluminum fan just flexes. any ideas.
thanks
thomas

I have a UK 240v labeled monitor can this be reconfigured to work on US
voltage without buying a step up transformer?

 Does anyone have a good spindle motor, from any Panasonic or Toshiba DVD
(or DVD/VCR combo), made in 2002? I think it's a 12-V type, and I'm pretty
sure they're all the same. The exact unit is Toshiba, with a chassis
identical to the Panasonic PV-D1734S.

Other than Electrolub, which can only be purchased in Australia by the case
as far as I know, what is a reliable potentiometer and contact cleaner/lub
and where can I get it?
Thanks,

I bought the big 12-pack of module a few years back when
I went X-10 in my house. Since then I've had several failures,
especially in the appliance modules and the light switch
modules. Take the light switch module for instance. Typically

This (or these?) was used in the General Radio 1232-A tuned amplifier.
The holder is a cylindrical tube and the battery or cells are slid into
it to contact a strip for + on one end......pretty much similar looking
to what would take D-cell's except only slightly smaller O.D.

Has anyone built a device to "listen" to pulse
width modulated power supplies? My hearing
is getting bad, & I can't hear the "chirp" on plugin
in T.V.'s for example! Rono.

A friend gave me his Mitsubishi 35 inch color TV CS3504R.
I get great picture on all channels, all inputs- cable, antenna, VCR but
only black and white.
I get no color.